Optima Batteries 8010-044 6V RedTop Starting Battery 6-Volt, 800 Cold Cranking Amps Reserve capacity of 100 minutes for constant performance Optimal starting power even in bad weather. Case Material : Polypropylene 15 times more resistant to vibration for durability. C20 capacity: 50 Ah Weight:18.5lb, Length:10.06, Width:3.63, Height:8.13 inch 6-Volt, 800 Cold Cranking Amps, Size: 10" x 6 7/8" x 7 13/16" tall, Weight: 18.4 pounds, SAE Posts Reserve capacity of 100 minutes for constant performance Optimal starting power even in bad weather Fifteen times more resistant to vibration for durability This item is not for sale in Catalina Island